CodeExplorer

setThrowable example

  public function onExceptionSendChallenge(ExceptionEvent $event) {
    if (isset($this->challengeProvider) && $event->isMainRequest()) {
      $request = $event->getRequest();
      $exception = $event->getThrowable();
      if ($exception instanceof AccessDeniedHttpException && !$this->authenticationProvider->applies($request) && (!isset($this->filter) || $this->filter->appliesToRoutedRequest($request, FALSE))) {
        $challenge_exception = $this->challengeProvider->challengeException($request, $exception);
        if ($challenge_exception) {
          $event->setThrowable($challenge_exception);
        }
      }
    }
  }

  /** * Detect disallowed authentication methods on access denied exceptions. * * @param \Symfony\Component\HttpKernel\Event\ExceptionEvent $event * The event. */

final class ExceptionEvent extends RequestEvent
{
    private \Throwable $throwable;
    private bool $allowCustomResponseCode = false;

    public function __construct(HttpKernelInterface $kernel, Request $request, int $requestType, \Throwable $e)
    {
        parent::__construct($kernel, $request, $requestType);

        $this->setThrowable($e);
    }

    public function getThrowable(): \Throwable
    {
        return $this->throwable;
    }

    /** * Replaces the thrown exception. * * This exception will be thrown if no response is set in the event. */

  /** * Catches failed parameter conversions and throw a 404 instead. * * @param \Symfony\Component\HttpKernel\Event\ExceptionEvent $event * The event. */
  public function onException(ExceptionEvent $event) {
    $exception = $event->getThrowable();
    if ($exception instanceof ParamNotConvertedException) {
      $event->setThrowable(new NotFoundHttpException($exception->getMessage(), $exception));
    }
  }

  /** * {@inheritdoc} */
  public static function getSubscribedEvents(): array {
    $events[KernelEvents::EXCEPTION][] = ['onException', 75];
    return $events;
  }

}

        $throwable = $event->getThrowable();
        $logLevel = $this->resolveLogLevel($throwable);

        foreach ($this->exceptionsMapping as $class => $config) {
            if (!$throwable instanceof $class || !$config['status_code']) {
                continue;
            }
            if (!$throwable instanceof HttpExceptionInterface || $throwable->getStatusCode() !== $config['status_code']) {
                $headers = $throwable instanceof HttpExceptionInterface ? $throwable->getHeaders() : [];
                $throwable = new HttpException($config['status_code'], $throwable->getMessage(), $throwable, $headers);
                $event->setThrowable($throwable);
            }
            break;
        }

        // There's no specific status code defined in the configuration for this exception         if (!$throwable instanceof HttpExceptionInterface) {
            $class = new \ReflectionClass($throwable);

            do {
                if ($attributes = $class->getAttributes(WithHttpStatus::class, \ReflectionAttribute::IS_INSTANCEOF)) {
                    /** @var WithHttpStatus $instance */

  /** * {@inheritdoc} */
  public function onException(ExceptionEvent $event) {
    if (!$this->isJsonApiExceptionEvent($event)) {
      return;
    }
    if (($exception = $event->getThrowable()) && !$exception instanceof HttpException) {
      $exception = new HttpException(500, $exception->getMessage(), $exception);
      $event->setThrowable($exception);
    }

    $this->setEventResponse($event, $exception->getStatusCode());
  }

  /** * {@inheritdoc} */
  protected function setEventResponse(ExceptionEvent $event, $status) {
    /** @var \Symfony\Component\HttpKernel\Exception\HttpException $exception */
    $exception = $event->getThrowable();

while (null !== $exception = $exception->getPrevious());
    }

    private function handleAuthenticationException(ExceptionEvent $event, AuthenticationException $exception): void
    {
        $this->logger?->info('An AuthenticationException was thrown; redirecting to authentication entry point.', ['exception' => $exception]);

        try {
            $event->setResponse($this->startAuthentication($event->getRequest(), $exception));
            $event->allowCustomResponseCode();
        } catch (\Exception $e) {
            $event->setThrowable($e);
        }
    }

    private function handleAccessDeniedException(ExceptionEvent $event, AccessDeniedException $exception): void
    {
        $event->setThrowable(new AccessDeniedHttpException($exception->getMessage(), $exception));

        $token = $this->tokenStorage->getToken();
        if (!$this->authenticationTrustResolver->isFullFledged($token)) {
            $this->logger?->debug('Access denied, the user is not fully authenticated; redirecting to authentication entry point.', ['exception' => $exception]);

try {
        $response = $this->formAjaxResponseBuilder->buildResponse($request, $form, $form_state, []);

        // Since this response is being set in place of an exception, explicitly         // mark this as a 200 status.         $response->setStatusCode(200);
        $event->allowCustomResponseCode();
        $event->setResponse($response);
      }
      catch (\Exception $e) {
        // Otherwise, replace the existing exception with the new one.         $event->setThrowable($e);
      }
    }
  }

  /** * Extracts a form AJAX exception. * * @param \Throwable $e * A generic exception that might contain a form AJAX exception. * * @return \Drupal\Core\Form\FormAjaxException|null * Either the form AJAX exception, or NULL if none could be found. */